Case for a writing instrument



FIG. 1 is a perspective view of a case for a writing instrument showinga new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof.

The broken lines are shown for the purpose of illustrating environmentalsubject matter and parts of the case for a writing instrument that formno part of the claimed design.

CLAIM The ornamental design for a “case for a writing instrument,” asshown and described.